Cyanide destruction process

Details Cyanide destruction process Cyanide destruction process

C - Chemistry, Metallurgy

02

F

362/43

C02F 1/58 (2006.01) C02F 9/00 (2006.01)

Patent

CA 1183617

CYANIDE DESTRUCTION PROCESS ABSTRACT OF THE DISCLOSURE There is provided a continuous process for destruction of cyanide in a solution or a slurry which has unacceptably high levels thereof, such as those resulting from cyanidation of gold or silver ores. The process provides for continuously feeding the solution or slurry into a suitable vessel under agitation, introducing pure SO2 into such vessel at such a rate as to controllably maintain the pH between 7 and 9 and also adding copper sulphate at such a rate as to reduce the cyanide concentration in the effluent from the vessel to an acceptable level.

443518

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